Welding Electrode

Materials for Electrodes

The list below shows rough standards for choosing electrode materials. Recommended electrode materials may change depending on the work piece surface treatment or dimensions.

Electrode Number
Alloy Components
Electric Conductivity (IACS%)
Applicable Metal
02 (Equivalent to RWMA-2)
Cu-Cr-Zr
Around 80%
Iron, Nickel, Chrome and their Alloys
03 (Equivalent to RWMA-3)
Cu-Ni-Be
Around 50%
Phosphor Bronze, Brass
00
Pure Mo
Around 39%
Dumet Wire, Tinned Copper Wire, Solder Plating Copper Wire
11 (Equivalent to RWMA-11)
Cu (30%) - W (70%)
Around 46%
Noble Metal
13 (Equivalent to RWMA-13)
Pure W
Around 33%
Copper

RWMA stands for Resistance Welder Manufacturer's Association

IACS stands for International Anneald Copper Standard

 

Applicable Weld Head
Electrode Number
Shape

 

NA-122

 

NA-90

EH-062-02A

NA-121

NA-122

NA-143

NA-60A

 

EH-125-02A

 

EH-125-03

NA-121

NA-122

NA-143

NA-60A

 

EH-125-00A

 

EH-125-11A

EH-125-13A

NA-121

NA-122

NA-124

NA-143

NA-60A

EH-250-02A

EH-250-03

NA-121

 NA-122 

NA-124

NA-143

NA-60

 

EH-250-00A

EH-250-11A

EH-250-13A

NA-124
EH-80-00

NA-60C

NA-124

EH-60C

NA-121

NA-122

NA-124

NA-143

NA-60A

EO-250-02A

EO-250-03

NA-121

NA-122

NA-124

NA-143

NA-60A

 

EH-250-02S
 

NA-121

NA-122

NA-124

NA-143

 NA-60A

EH-250-00S

EH-250-13S

NA-121

NA-122

NA-124

NA-143

NA-60A

 

EO-250-00A

EO-250-11A

EO-250-13A

NA-131

NA-132

NA-65

 

EP-711-00F

EP-711-02FA

 

NA-65

EP-711-00

EP-711-02FA

 

NA-131

 

NA-132

NA-65

 

EP-406-00F

 

EP-406-02FA

 

The Shape of Electrodes

Applicable Weld Head
Electrode Number
Shape
NA-65
EP-406-02A
NA-54A

 

EL-125-02A

EL-125-03

NA-54A

EL-125-00A

EL-125-11A

EL-125-13A

NA-54LA
EL-54LA
NA-72
EHC-F
NA-72
EH-F-00
NA-72
EH-F-02
NA-90
EP-507-00F
NA-90

EP-507-00

EP-507-02A

NA-60A
EHC-

CC (6.4ø)

CC Alloy250M4
NA-60A

WT-M25M4-00

WT-M25M4-02

 

CC (6.4ø)

CC Alloy

 

 

CC (3.2ø)

CC Alloy
  Molybdenum Square Bar